Yibao Chen, Erchao Sun, Lan Yang, Jiaoyang Song, Bin Wu
Abstract
Phage PHB02 specifically infects Pasteurella multocida capsular serogroup A strains. In this study, we found that capsule deletion mutants were not lysed by PHB02, suggesting that the capsule of P. multocida serogroup A strains might be the primary receptor. Based on sequence analysis, a gene encoding a phage-associated putative depolymerase was identified. The corresponding recombinant depolymerase demonstrated specific activity against capsular serogroup A strains but did not strip capsule deletion mutants. In vivo experiments showed that PHB02 was retained at detectable levels in the liver, spleen, kidneys, lung, and blood, at 24 h post-administration in mice. Depolymerase plus serum significantly reduced the number of viable wild-type P. multocida strain HB03 cells (3.5-4.5 log decrease in colony-forming units). Moreover, treatment with phage or purified depolymerase resulted in significantly increased survival of mice infected with P. multocida HB03, and an absence of increase of eosinophils and basophils or other pathological changes when compared with the control group. These results show that phage PHB02 and its putative depolymerase represent a novel strategy for controlling P. multocida serogroup A strains.
Pharmacology, Toxicology and Pharmaceutical Science
1
3%
Agricultural and Biological Sciences
1
3%
Other
3
9%
Unknown
13
38%
Attention Score in Context
Attention Score in Context
This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 23 August 2018.
All research outputs
#18,647,094
of 23,100,534 outputs
Outputs from Frontiers in Microbiology
#19,675
of 25,279 outputs
Outputs of similar age
#254,362
of 330,796 outputs
Outputs of similar age from Frontiers in Microbiology
#571
of 748 outputs
Altmetric has tracked 23,100,534 research outputs across all sources so far. This one is in the 11th percentile – i.e., 11% of other outputs scored the same or lower than it.
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